Feasibility Study for Ultrasound-Guided Interstitial Brachytherapy for Gynecological CancersV2

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

35 participants

Study Classification

INTERVENTIONAL

Study Start Date

2015-02-17

Study Completion Date

2022-04-07

Brief Summary

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Brachytherapy treatment in gynecological cancers is an essential component to delivering adequate doses of radiation to a tumour while sparing normal tissue. Interstitial and intracavitary brachytherapy is often needed in advanced or recurrent disease, in cases where intrauterine brachytherapy may not deliver the optimal outcome. Interstitial brachytherapy is based on a defined template-and-needle system, and the procedure relies on clinical examination and pre-treatment imaging to guide needle insertion. There is currently no standard image-guided process to help direct needles in the pelvis. The investigators propose a 3D ultrasound device that will provide real-time imaging for the brachytherapy procedure which will aid in avoiding needle insertion into pelvic organs and result in optimal dose coverage to the tumour.

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Detailed Description

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This is an efficacy study to optimize the use of three-dimensional ultrasound imaging for interstitial and intracavitary brachytherapy. In this study, 3DUS images will be acquired during the regular clinical procedure to assess the quality of the images, anatomical detail and location of needles. The acquired images will be analyzed post-treatment and fused with pre-treatment MRI, and post-treatment CT scans to develop a virtual simulated radiation treatment plan, and to verify the applicator positions.

Conditions

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Gynecologic Cancer

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Patients who are assigned to gynecological brachytherapy.

Primary Study Purpose

OTHER

Blinding Strategy

NONE

Study Groups

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Patient

Patients undergoing gynecological brachytherapy, will be imaged with a 3D ultrasound medical device for the purpose of efficacy testing.

Group Type OTHER

Interstitial and intracavitary brachytherapy

Intervention Type DEVICE

Standard of care in interstitial or intracavitary brachytherapy is to insert the brachytherapy needle and applicator with no standard real-time image guidance. Interstitial brachytherapy is done under general anesthesia. Trans-abdominal and trans-rectal standard 2D ultrasound is used in some cases, but is typically not consistent and therefore its value is limited. Pre-procedure imaging in the form of MRI is used to help guide needles insertion as well as the clinical exam. Post-procedure CT is done for radiation planning

Interventions

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Interstitial and intracavitary brachytherapy

Standard of care in interstitial or intracavitary brachytherapy is to insert the brachytherapy needle and applicator with no standard real-time image guidance. Interstitial brachytherapy is done under general anesthesia. Trans-abdominal and trans-rectal standard 2D ultrasound is used in some cases, but is typically not consistent and therefore its value is limited. Pre-procedure imaging in the form of MRI is used to help guide needles insertion as well as the clinical exam. Post-procedure CT is done for radiation planning

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* Patients with locally advanced or recurrent gynecological malignancies who are offered interstitial or intracavitary brachytherapy treatment. These typically would include patients with primary or recurrent vaginal cancers, endometrial cancers or cervical cancers. Histologies of these cancers are typically adenocarcinomas or squamous cell carcinomas